A Strong PSU is Required for EVGA’s GTX 580 Classified!

EVGA GTX 580 Classified

Few days ago, I received one of the best GTX 580 in the world: EVGA’s Classified model with 3GB of graphics memory. I plugged this big card on my testbed and… ouch! No way to start the system. The system starts and half a second later the PSU shuts down. WTF? The PSU is a Thermaltake Toughpower Grand 1050W (I reviewed the 850W here). Seems the GTX 580 Classified (I think the responsible is the 14+3-phase power circuitry –VRM) is a bit too greedy and needs a PSU that can support some important peak current at the startup. Like an electrical engine!

I replaced Thermaltake’s PSU by Corsair’s AX1200 one. Yes! My testbed can now start up!

Conclusion: with an ultra-high-end graphics card like the GTX 580 Classified, always check your PSU: can it handle your new monster?

EVGA GTX 580 Classified, Geeks3D's testbed

More about this awesome card in an upcoming review!


  • JustAnOpinion

    From an engineering point of view, that’s just an faulty electrical layout. If this card would be contructed like it should be, it would never ever draw such an huge current at startup.

  • BlackX

    pfff termaltake only Apparent Power

  • WacKEDmaN

    this is getting crazy..they really need to work on getting the power consumption down on video cards for the medium to highend desktop market..it seems to be the only sector that doesnt care about energy consumption..

  • trollfed

    or you could just get the 7970 OC’d and beat it. on a normal 600w psu… lol

  • samsi suardi

    Agree… let’s go green 😉

  • JoP

    EVGA GTX 580 Classified Requirements:
    Minimum of a 600 Watt power supply.
    (Minimum recommended power supply with +12 Volt current rating of 42 Amps.)

    Thermaltake Toughpower Grand 1050W specs:
    +12V 1 = 40 amps
    +12V 2 = 80 amps

    Corsair AX1200 specs:
    +12V = 100.4 amps

    better to have only one +12V ?